Convert BlackHoleEventDispatcher to Kotlin

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -5547,12 +5547,13 @@ public abstract interface class com/facebook/react/uimanager/events/BatchEventDi
 	public abstract fun onBatchEventDispatched ()V
 }
 
-public class com/facebook/react/uimanager/events/BlackHoleEventDispatcher : com/facebook/react/uimanager/events/EventDispatcher {
+public final class com/facebook/react/uimanager/events/BlackHoleEventDispatcher : com/facebook/react/uimanager/events/EventDispatcher {
+	public static final field Companion Lcom/facebook/react/uimanager/events/BlackHoleEventDispatcher$Companion;
 	public fun addBatchEventDispatchedListener (Lcom/facebook/react/uimanager/events/BatchEventDispatchedListener;)V
 	public fun addListener (Lcom/facebook/react/uimanager/events/EventDispatcherListener;)V
 	public fun dispatchAllEvents ()V
 	public fun dispatchEvent (Lcom/facebook/react/uimanager/events/Event;)V
-	public static fun get ()Lcom/facebook/react/uimanager/events/EventDispatcher;
+	public static final fun get ()Lcom/facebook/react/uimanager/events/EventDispatcher;
 	public fun onCatalystInstanceDestroyed ()V
 	public fun registerEventEmitter (ILcom/facebook/react/uimanager/events/RCTEventEmitter;)V
 	public fun registerEventEmitter (ILcom/facebook/react/uimanager/events/RCTModernEventEmitter;)V
@@ -5561,11 +5562,13 @@ public class com/facebook/react/uimanager/events/BlackHoleEventDispatcher : com/
 	public fun unregisterEventEmitter (I)V
 }
 
-public class com/facebook/react/uimanager/events/ContentSizeChangeEvent : com/facebook/react/uimanager/events/Event {
-	public static final field EVENT_NAME Ljava/lang/String;
+public final class com/facebook/react/uimanager/events/BlackHoleEventDispatcher$Companion {
+	public final fun get ()Lcom/facebook/react/uimanager/events/EventDispatcher;
+}
+
+public final class com/facebook/react/uimanager/events/ContentSizeChangeEvent : com/facebook/react/uimanager/events/Event {
 	public fun <init> (III)V
 	public fun <init> (IIII)V
-	protected fun getEventData ()Lcom/facebook/react/bridge/WritableMap;
 	public fun getEventName ()Ljava/lang/String;
 }
 

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/internal/bolts/Executors.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.runtime.internal.bolts
+
+import com.facebook.react.bridge.UiThreadUtil
+import java.util.concurrent.Executor
+
+/**
+ * This was created because the helper methods in [java.util.concurrent.Executors] do not work as
+ * people would normally expect.
+ *
+ * Normally, you would think that a cached thread pool would create new threads when necessary,
+ * queue them when the pool is full, and kill threads when they've been inactive for a certain
+ * period of time. This is not how [java.util.concurrent.Executors.newCachedThreadPool] works.
+ *
+ * Instead, [java.util.concurrent.Executors.newCachedThreadPool] executes all tasks on a new or
+ * cached thread immediately because corePoolSize is 0, SynchronousQueue is a queue with size 0 and
+ * maxPoolSize is Integer.MAX_VALUE. This is dangerous because it can create an unchecked amount of
+ * threads.
+ */
+internal object Executors {
+  @JvmField public val UI_THREAD: Executor = UIThreadExecutor()
+  @JvmField public val IMMEDIATE: Executor = ImmediateExecutor()
+
+  private class UIThreadExecutor : Executor {
+    override fun execute(command: Runnable) {
+      UiThreadUtil.runOnUiThread(command)
+    }
+  }
+
+  /**
+   * An [java.util.concurrent.Executor] that schedules tasks to run asynchronously on the UI thread.
+   */
+  private class ImmediateExecutor : Executor {
+    override fun execute(command: Runnable) {
+      command.run()
+    }
+  }
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BlackHoleEventDispatcher.kt

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager.events
+
+import com.facebook.common.logging.FLog
+
+/**
+ * A singleton class that overrides [EventDispatcher] with no-op methods, to be used by callers that
+ * expect an EventDispatcher when the instance doesn't exist.
+ */
+public class BlackHoleEventDispatcher private constructor() : EventDispatcher {
+  public override fun dispatchEvent(event: Event<*>) {
+    FLog.d(
+        "BlackHoleEventDispatcher",
+        "Trying to emit event to JS, but the React instance isn't ready. Event: ${event.eventName}")
+  }
+
+  public override fun dispatchAllEvents(): Unit = Unit
+
+  public override fun addListener(listener: EventDispatcherListener): Unit = Unit
+
+  public override fun removeListener(listener: EventDispatcherListener): Unit = Unit
+
+  public override fun addBatchEventDispatchedListener(
+      listener: BatchEventDispatchedListener
+  ): Unit = Unit
+
+  public override fun removeBatchEventDispatchedListener(
+      listener: BatchEventDispatchedListener
+  ): Unit = Unit
+
+  @Suppress("DEPRECATION")
+  public override fun registerEventEmitter(
+      uiManagerType: Int,
+      eventEmitter: RCTEventEmitter
+  ): Unit = Unit
+
+  public override fun registerEventEmitter(
+      uiManagerType: Int,
+      eventEmitter: RCTModernEventEmitter
+  ): Unit = Unit
+
+  public override fun unregisterEventEmitter(uiManagerType: Int): Unit = Unit
+
+  public override fun onCatalystInstanceDestroyed(): Unit = Unit
+
+  public companion object {
+    private val eventDispatcher: EventDispatcher = BlackHoleEventDispatcher()
+
+    public @JvmStatic fun get(): EventDispatcher = eventDispatcher
+  }
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ContentSizeChangeEvent.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+@file:Suppress("DEPRECATION")
+
+package com.facebook.react.uimanager.events
+
+import com.facebook.react.bridge.Arguments
+import com.facebook.react.bridge.WritableMap
+import com.facebook.react.uimanager.PixelUtil.toDIPFromPixel
+
+/** Event dispatched when total width or height of a view's children changes. */
+@Deprecated("Please define your own event for custom components")
+public class ContentSizeChangeEvent(
+    surfaceId: Int,
+    viewTag: Int,
+    private val width: Int,
+    private val height: Int
+) : Event<ContentSizeChangeEvent>(surfaceId, viewTag) {
+  @Deprecated(
+      "Please specify surfaceId explicitly in the constructor.",
+      ReplaceWith("constructor(surfaceId, viewTag, width, height)"))
+  public constructor(viewTag: Int, width: Int, height: Int) : this(-1, viewTag, width, height)
+
+  public override fun getEventName(): String = "topContentSizeChange"
+
+  protected override fun getEventData(): WritableMap {
+    val res = Arguments.createMap()
+    res.putDouble("width", toDIPFromPixel(width.toFloat()).toDouble())
+    res.putDouble("height", toDIPFromPixel(height.toFloat()).toDouble())
+    return res
+  }
+}